Getting the last database identifier

[eluser]bikuta[/eluser]
Hi, I was wondering whether it was possible with active query to get the last id that was generated after a new record has been entered into the database.

So basically I've got something like this:

$this->obj_model->add($data);

// need to get unique id from previous command to update a value in $otherdata

$this->otherobj_model->add($otherdata);


the add() methods just calls a $this->db->insert command.